<?xml version="1.0" encoding="UTF-8"?>
<dxl:DXLMessage xmlns:dxl="http://greenplum.com/dxl/2010/12/">
  <dxl:Comment><![CDATA[
	Objective: For a DML query with a predicate containing an outer
	reference, predicate (x.a + y.b) in the below query; the PhysicalFilter
	generated from such a predicate should request for Singleton Segment
	distribution spec instead of Singleton Master. 

	create table x(a int);
	create table y(b int);
	explain insert into x select * from x where exists (select * from x where exists (select * from y where x.a + y.b = 2));


                                                                 QUERY PLAN
--------------------------------------------------------------------------------------------------------------------------------------------
 Insert  (cost=0.00..1356691694.21 rows=1 width=4)
   ->  Result  (cost=0.00..1356691694.20 rows=1 width=8)
         ->  Nested Loop Semi Join  (cost=0.00..1356691694.20 rows=1 width=4)
               Join Filter: true
               ->  Table Scan on x x_1  (cost=0.00..431.00 rows=1 width=4)
               ->  Materialize  (cost=0.00..1324032.23 rows=1 width=1)
                     ->  Broadcast Motion 1:3  (slice3; segments: 1)  (cost=0.00..1324032.23 rows=3 width=1)
                           ->  Limit  (cost=0.00..1324032.23 rows=1 width=1)
                                 ->  Result  (cost=0.00..1324032.23 rows=1 width=1)
                                       ->  Result  (cost=0.00..1324032.23 rows=1 width=1)
                                             Filter: (SubPlan 1)
                                             ->  Gather Motion 3:1  (slice1; segments: 3)  (cost=0.00..431.00 rows=1 width=4)
                                                   ->  Table Scan on x  (cost=0.00..431.00 rows=1 width=4)
                                             SubPlan 1  (slice3; segments: 1)
                                               ->  Result  (cost=0.00..431.00 rows=1 width=4)
                                                     Filter: ((x.a + y.b) = 2)
                                                     ->  Materialize  (cost=0.00..431.00 rows=1 width=4)
                                                           ->  Gather Motion 3:1  (slice2; segments: 3)  (cost=0.00..431.00 rows=1 width=4)
                                                           ->  Table Scan on y  (cost=0.00..431.00 rows=1 width=4)
  ]]>
  </dxl:Comment>
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      <dxl:EnumeratorConfig Id="0" PlanSamples="0" CostThreshold="0"/>
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      <dxl:CTEConfig CTEInliningCutoff="0"/>
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      </dxl:CostModelConfig>
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